Roman to Integer

 1 class Solution {
 2 public:
 3     int romanToInt(string s) {
 4         char temp;
 5         int leng=s.length();
 6         for(int i=0;i<leng;i++){
 7             temp=s.at(i);
 8             int number=charToInt(temp);
 9             
10         }
11         
12     }
13     int charToInt(char c)
14     {
15         int num=0;
16         switch(c)
17         {
18             case ‘I‘:num=1;
19             break;
20             case ‘V‘:num=5;
21             break;
22             case ‘X‘:num=10;
23             break;
24             case ‘L‘:num=50;
25             break;
26             case ‘C‘:num=100;
27             break;
28             case ‘D‘:num=500;
29             break;
30             case ‘M‘:num=1000;
31             break;
32         }
33         return num;
34     }
35 };